Variation minimization in tele-sandblasting system: the effect of human-arm movement errorRanon Jientrakul, Pornsak Attavanish, Pholchai Chotiprayanakul, Sunpasit Limnararat and Chumpol YuangyaiMATEC Web Conf., 192 (2018) 01052DOI: https://doi.org/10.1051/matecconf/201819201052